Samsung PM9B1 256 GB (MZVL4256HBJD-00B07)

The Samsung PM9B1 is an OEM-class NVMe SSD lineup designed for laptops, ultrabooks, and compact PCs. The drive is available in M.2 2230, 2242, and 2280 form factors and combines moderate power consumption, HMB architecture, and PCIe 4.0 connectivity for everyday computing needs. Samsung PM9B1 is most commonly offered in 256 GB, 512 GB, and 1 TB capacities with a PCIe 4.0 x4 interface. The drive lacks a dedicated DRAM cache but supports HMB, NVMe 1.4, and TCG Pyrite 2.0 security features. For the 256 GB model in the 2230 format, Samsung rates sequential read speeds up to 3,300 MB/s and write speeds up to 1,250 MB/s. The 512 GB and 1 TB variants in the 2280 form factor typically deliver around 3,500–3,600 MB/s read and 2,500–3,000 MB/s write speeds. Samsung positions the PM9B1 as the predecessor to the PM9C1a, reinforcing its role as a mainstream PCIe 4.0 OEM solution for laptops and PCs. The Samsung PM9B1 is an excellent choice for system integrators and notebook manufacturers who need compact form factors, low power consumption, and solid performance without stepping into the premium segment.